Climb inside an iron crystal magnified 165 billion times its normal size.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

Jean Tinguely's bizarre monster sculpture is hidden deep in a forest.

This Japanese national treasure was originally built in 593.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

This abandoned Belgian fortress is purposefully being left to nature.

A Belgian self-built tower inspired by the Bible and ancient civilizations.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Rising from the sea like a stone monster.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

A moving memorial to the fallen and missing from WWI trenches.

This Belgian theme park began as a refuge for bored church children and was closed down when a boy lost an arm.

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Giant naked man on a hillside.

Brussels' favorite peeing boy has a sister.

A church that bred legends, and served as an inspiration for the Da Vinci Code.